Futures

Fix E0770: Async Fn Return Type Cannot Contain Impl Trait

Rust intermediate Linux macOS Windows Jun 15, 2026

Rust compiler error E0770 occurs when an async function's return type contains impl Trait, which generators cannot represent.

Fix E0575: Rust Async Closure Type Mismatch Error

Rust intermediate Linux macOS Windows WebAssembly May 19, 2026

Rust compiler error caused by passing a regular closure where an async closure is expected, or vice versa.